astatine
noun /ˈæstətiːn/
/ˈæstətiːn/
[uncountable] (symbol At)
- a chemical element. Astatine is a radioactive element that is found in small amounts in nature, and is produced artificially for use in medicine.
砹(放射性化学元素) 词源1940s: from Greek astatos ‘unstable’ + -ine.